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Petrov's Defense: Cozio Attack

311K games from Lichess · Updated January 2026

Playable
White Expected Score51.8%Range (90% confident): 51.7% – 52.0%Based on 311K games
0%51.8%100%
Range (90% confident): 51.7% – 52.0%
Outcome Distribution
48.6%6.3%45.0%
Win
Draw
Loss
5.Qe2
Petrov's Defense: Cozio Attack
Analyzen=311K
Avg Length38 moves
Sharpness94%
Draw Rate6.3%

What is the Petrov's Defense: Cozio Attack expected score for White?

Snapshot

At all ratings, the Petrov's Defense: Cozio Attack has a 51.8% expected score for White (we're 90% confident it's between 51.7% and 52.0%), based on 311K Lichess games.

White Win% by Rating

Declines with rating: 53% → 50%

0
1000
1200
1400
1600
1800
2000
2200
2500+

  • 0-999: 53.2% win rate (14,392 games)
  • 1000-1199: 50.8% win rate (34,701 games)
  • 1200-1399: 49.2% win rate (55,926 games)
  • 1400-1599: 47.7% win rate (69,690 games)
  • 1600-1799: 47.7% win rate (65,084 games)
  • 1800-1999: 47.8% win rate (41,957 games)
  • 2000-2199: 47.6% win rate (18,688 games)
  • 2200-2499: 49.1% win rate (8,689 games)
  • 2500+: 50.1% win rate (1,388 games)

White Win% by Time Control

Best in Rapid (49%), worst in UltraBullet (45%)

UltraBullet
Bullet
Blitz
Rapid
Classical

  • UltraBullet: 44.8% win rate (42 games)
  • Bullet: 47.9% win rate (68,764 games)
  • Blitz: 48.8% win rate (157,979 games)
  • Rapid: 49.0% win rate (79,661 games)
  • Classical: 48.0% win rate (4,069 games)

White% by Rating × Time Control

Click any cell to filter. Green = above 50%, Red = below 50%.

RatingUBBulleBlitzRapidClass
0-999
1000-1199
1200-1399
1400-1599
1600-1799
1800-1999
2000-2199—
2200-2499
2500+—

Expected score matrix by rating bracket and time control

  • 0-999 rating, UltraBullet: 30.7% expected score (14 games)
  • 0-999 rating, Bullet: 49.7% expected score (4,781 games)
  • 0-999 rating, Blitz: 56.9% expected score (6,027 games)
  • 0-999 rating, Rapid: 59.5% expected score (3,551 games)
  • 0-999 rating, Classical: 40.3% expected score (19 games)
  • 1000-1199 rating, UltraBullet: 29.0% expected score (8 games)
  • 1000-1199 rating, Bullet: 49.6% expected score (9,662 games)
  • 1000-1199 rating, Blitz: 53.3% expected score (16,193 games)
  • 1000-1199 rating, Rapid: 56.4% expected score (8,690 games)
  • 1000-1199 rating, Classical: 58.7% expected score (148 games)
  • 1200-1399 rating, UltraBullet: 62.0% expected score (11 games)
  • 1200-1399 rating, Bullet: 49.1% expected score (12,419 games)
  • 1200-1399 rating, Blitz: 51.7% expected score (28,806 games)
  • 1200-1399 rating, Rapid: 53.3% expected score (14,193 games)
  • 1200-1399 rating, Classical: 61.1% expected score (497 games)
  • 1400-1599 rating, UltraBullet: 63.4% expected score (6 games)
  • 1400-1599 rating, Bullet: 48.8% expected score (13,477 games)
  • 1400-1599 rating, Blitz: 51.0% expected score (34,996 games)
  • 1400-1599 rating, Rapid: 51.3% expected score (20,040 games)
  • 1400-1599 rating, Classical: 50.0% expected score (1,171 games)
  • 1600-1799 rating, UltraBullet: 70.0% expected score (1 games)
  • 1600-1799 rating, Bullet: 50.8% expected score (11,986 games)
  • 1600-1799 rating, Blitz: 51.4% expected score (33,878 games)
  • 1600-1799 rating, Rapid: 51.1% expected score (17,849 games)
  • 1600-1799 rating, Classical: 51.6% expected score (1,370 games)
  • 1800-1999 rating, UltraBullet: 70.0% expected score (1 games)
  • 1800-1999 rating, Bullet: 52.0% expected score (7,684 games)
  • 1800-1999 rating, Blitz: 52.3% expected score (23,000 games)
  • 1800-1999 rating, Rapid: 50.9% expected score (10,566 games)
  • 1800-1999 rating, Classical: 50.0% expected score (706 games)
  • 2000-2199 rating, Bullet: 51.9% expected score (4,622 games)
  • 2000-2199 rating, Blitz: 52.8% expected score (9,844 games)
  • 2000-2199 rating, Rapid: 52.5% expected score (4,090 games)
  • 2000-2199 rating, Classical: 48.9% expected score (132 games)
  • 2200-2499 rating, UltraBullet: 30.0% expected score (1 games)
  • 2200-2499 rating, Bullet: 52.5% expected score (3,508 games)
  • 2200-2499 rating, Blitz: 56.4% expected score (4,491 games)
  • 2200-2499 rating, Rapid: 54.7% expected score (666 games)
  • 2200-2499 rating, Classical: 60.2% expected score (23 games)
  • 2500+ rating, Bullet: 55.4% expected score (625 games)
  • 2500+ rating, Blitz: 58.7% expected score (744 games)
  • 2500+ rating, Rapid: 50.0% expected score (16 games)
  • 2500+ rating, Classical: 61.1% expected score (3 games)

Related Openings

Parent
Petrov's Defense
49.1%
Variations (5)
Petrov's Defense: Classical Attack
50.2%
Petrov's Defense: Classical Attack, Berger Variation
41.7%
Petrov's Defense: Classical Attack, Chigorin Variation
45.3%
Petrov's Defense: Classical Attack, Chigorin Variation, Browne Attack
46.5%
Petrov's Defense: Classical Attack, Chigorin Variation, Main Line
38.0%
Analyze Petrov's Defense: Cozio Attack PositionsGet move-by-move win rates with the TrueElo analyzer

Frequently Asked Questions

What is the Petrov's Defense: Cozio Attack win rate?

The Petrov's Defense: Cozio Attack has a 48.6% (90% CI: 48.5%-48.8%) win rate for white, based on 311K rated games from Lichess.

At what rating does the Petrov's Defense: Cozio Attack perform best?

The Petrov's Defense: Cozio Attack performs best at 0-999 Elo with a 53.2% win rate for white (14K games). Win rate tends to decline at higher ratings as opponents know the theory better.

Is the Petrov's Defense: Cozio Attack better in blitz or rapid?

Rapid (49.0%) outperforms Classical (48.0%) by 1.0%. Choose your time control wisely.

How sharp is the Petrov's Defense: Cozio Attack?

The Petrov's Defense: Cozio Attack has a sharpness score of 93.7 (decisive), meaning 93.7% of games end decisively. Average game length is 38 moves.

What is the Petrov's Defense: Cozio Attack win rate at 0-999 Elo?

At 0-999 Elo, the Petrov's Defense: Cozio Attack has a 53.2% (90% CI: 52.5%-53.9%) win rate for white, based on 14K Lichess games. Average game length is 28 moves with a 3.7% draw rate.

What is the Petrov's Defense: Cozio Attack win rate at 1000-1199 Elo?

At 1000-1199 Elo, the Petrov's Defense: Cozio Attack has a 50.8% (90% CI: 50.4%-51.3%) win rate for white, based on 35K Lichess games. Average game length is 32 moves with a 4.4% draw rate.

What is the Petrov's Defense: Cozio Attack win rate at 1200-1399 Elo?

At 1200-1399 Elo, the Petrov's Defense: Cozio Attack has a 49.2% (90% CI: 48.8%-49.5%) win rate for white, based on 56K Lichess games. Average game length is 35 moves with a 4.9% draw rate.

What is the Petrov's Defense: Cozio Attack win rate at 1400-1599 Elo?

At 1400-1599 Elo, the Petrov's Defense: Cozio Attack has a 47.7% (90% CI: 47.4%-48.0%) win rate for white, based on 70K Lichess games. Average game length is 38 moves with a 5.8% draw rate.

What is the Petrov's Defense: Cozio Attack win rate at 1600-1799 Elo?

At 1600-1799 Elo, the Petrov's Defense: Cozio Attack has a 47.7% (90% CI: 47.4%-48.0%) win rate for white, based on 65K Lichess games. Average game length is 40 moves with a 6.9% draw rate.

What is the Petrov's Defense: Cozio Attack win rate at 1800-1999 Elo?

At 1800-1999 Elo, the Petrov's Defense: Cozio Attack has a 47.8% (90% CI: 47.4%-48.2%) win rate for white, based on 42K Lichess games. Average game length is 42 moves with a 8.1% draw rate.

What is the Petrov's Defense: Cozio Attack win rate at 2000-2199 Elo?

At 2000-2199 Elo, the Petrov's Defense: Cozio Attack has a 47.6% (90% CI: 47.0%-48.2%) win rate for white, based on 19K Lichess games. Average game length is 43 moves with a 9.7% draw rate.

What is the Petrov's Defense: Cozio Attack win rate at 2200-2499 Elo?

At 2200-2499 Elo, the Petrov's Defense: Cozio Attack has a 49.1% (90% CI: 48.3%-50.0%) win rate for white, based on 8.7K Lichess games. Average game length is 45 moves with a 11.1% draw rate.

What is the Petrov's Defense: Cozio Attack win rate at 2500+ Elo?

At 2500+ Elo, the Petrov's Defense: Cozio Attack has a 50.1% (90% CI: 47.8%-52.3%) win rate for white, based on 1.4K Lichess games. Average game length is 48 moves with a 14.2% draw rate.

What is the Petrov's Defense: Cozio Attack win rate in Bullet?

In Bullet games, the Petrov's Defense: Cozio Attack has a 47.9% (90% CI: 47.6%-48.2%) win rate for white (69K Lichess games). Draw rate is 4.6%.

What is the Petrov's Defense: Cozio Attack win rate in Blitz?

In Blitz games, the Petrov's Defense: Cozio Attack has a 48.8% (90% CI: 48.6%-49.0%) win rate for white (158K Lichess games). Draw rate is 6.7%.

What is the Petrov's Defense: Cozio Attack win rate in Rapid?

In Rapid games, the Petrov's Defense: Cozio Attack has a 49.0% (90% CI: 48.7%-49.3%) win rate for white (80K Lichess games). Draw rate is 7.1%.

What is the Petrov's Defense: Cozio Attack win rate in Classical?

In Classical games, the Petrov's Defense: Cozio Attack has a 48.0% (90% CI: 46.7%-49.3%) win rate for white (4.1K Lichess games). Draw rate is 8.4%.

Is the Petrov's Defense: Cozio Attack a good opening?

The Petrov's Defense: Cozio Attack is statistically balanced with a 48.6% (90% CI: 48.5%-48.8%) win rate across all ratings. It performs best at 0-999 Elo. Your results depend on your rating, time control, and how well you know the typical plans.